"XXX" (stylized as "XXX.") is a song by American rapper Kendrick Lamar, from his fourth studio album Damn, released on April 14, 2017. The eleventh track on the album, the song was written by Lamar, Mike Will Made It, DJ Dahi, Sounwave, Anthony Tiffith, Bono, The Edge, Adam Clayton, and Larry Mullen Jr., and produced by Mike Will Made It, DJ Dahi, and Sounwave, with additional production by Top Dawg and Bēkon. The song features Irish rock band U2.

The lyrics of "XXX" are about speaking truth to power. The first verse has Lamar talking about what he would do if anything would happen to his family. The chorus then features Bono, the lead singer of Irish rock band U2, singing a prominent refrain in the latter half of the song. Lamar also references current US President Donald Trump.

"XXX" received widespread acclaim from music critics. Ian Servantes of Spin called the song "damn good." Steven Hyden of Uproxx said that U2's cameo was "very un-U2-like" but in a good way.

Lamar performed "XXX" live, without U2, at the Coachella Valley Music and Arts Festival on April 23, 2017.

The song contains samples of "Get Up Offa That Thing" by James Brown, "Wah Wah Man" by Young-Holt Unlimited, and "Fugue" by Foals.

Credits adapted from the official Damn digital booklet.

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